Lug strap



Dec. 6, 1938. FHE DOUGLAS 2,139,446

LUG STRAP Filed Aug. 1e, 1938 Fifi.

INVENTOR. 555006 5 00 0 4 ,4 5.

M WM Patented Dec. 6, 1938 ATET OFFI TE' we STRAP Fredric E. Douglas, Hopedale, Mass, assignor to Draper Corporation, Hopedale, Mass., a cor-- poration of Maine Application August 16, 1938, Serial No. 225,176

' ZCIaimS. (01.139-151) The present invention pertains to lug straps for looms and has more particular reference to the construction and arrangement of the yokes, and connecting means therefor, of such lug straps.

Lug straps as heretofore constructed have included oppositely disposed, overlapping yoke members which have theiroverlapping portions clamped together by suitable means such as, for

10 example, that shown in patent to Lahue, No. 664,560, granted Dec. 25, 1900. In this type of lug" strap, as distinguished from the type comprising a body member having relatively small loops fixed to its ends, the overlapping yoke mem- 15 bers have been located in horizontal planes for cooperation with a vertical picker stick and a vertical pick arm.

A principal object of the present invention is to provide 9. lug strap comprising oppositely dis- 20 posed, overlapping yoke members which are positioned one in a horizontal plane for cooperation with a vertical picker stick and the other in a vertical plane for cooperation with a horizontal lug on a vertical pick arm, and which lug strap shall also include a connector block located between the overlapping portions of said yoke members and means for fixing said portions to said block, thereby retaining the advantages of said overlapping-yoke type of lug strap while adapting the same for use with an entirely different type of pick arm.

The aforesaid and other objects of the invention are accomplished in the construction illustrated on the accompanying drawing, of which: 3 Fig. 1 is a .view partly in elevation and partly in section of certain loom parts including the preferred form of my improved lug strap;

Fig. 2 is a view of the same partly in plan and partly in section;

in Fig. 3 is a view in cross-section taken approximately on line 3-3 of Fig. 2; and

Fig. 4 is a detail view, in perspective, of the connector block of said preferred lug strap.

The drawing shows part of a conventional loom 13 picker stick I which, as is well known in the art, is positioned approximately vertically and is adapted to be rocked about a point at its lower end to pick the shuttle, not shown. The picking motion of the stick I is inwardly of the loom,

39 which is toward the right on Figs. 1 and 2. Said picking motion is imparted to the picker stick by a pick arm 2 which is connected to the picker stick by a lug strap to be hereinafter described. The pick arm 2 is rocked in a vertical plane ,5 parallel to the plane of the picker stick. At its upper end, the arm 2 has a lateral lug 3 which comprises a horizontally extending member having a cylindrical body 4.

The lug strap shown on the drawing includes a yoke member 5, a yoke member 8, a connector block I and means for fixingthe yoke members to the block. The outer yoke member 5 may be formed from a metal rod bent into a U-shape and positioned substantially in a horizontal plane. The closed outer end of the yoke member 5 is adapted to embrace the picker stick I. This closed end may be provided with a cushion 8 for softening the blow which is imparted to the picker stick by the pick arm 2. The particular cushion 8 shown consists of layers of leather positioned over and below the closed end of the yoke and secured together by rivets 9.

The closed end of the yoke 5 constitutes the outer end of the lug strap. This end may be supported on the picker stick l by any suitable usual means such as the inverted T-shaped strap It which is held on the picker stick by a clamp device II.

The yoke member 6 may be similarly formed from a metal rod bent into a U-shape. The yoke 6 extends generally horizontally in axial alignment with the yoke 5. The inner end of the yoke 6 is its closed end, and the free ends of the legs of the yoke overlap the corresponding ends of the legs of yoke 5. Unlike prior constructions, the yoke 6 is positioned substantially in a vertical plane. The closed end of yoke 6 is thus adapted to receive and cooperate with the horizontal cylindrical portion l of the lug on the pick arm. The lug strap pivots about the portion 4 to accommodate the vertical movement which is imparted to its outer end by the picker stick. The closed end of yoke 6 may be provided with a cushion l2 similar in construction to cushion 8.

The invention provides simple and efficient means for connecting overlapping yoke members such as members 5 and 6, wherein the yoke, members are located in diiferent planes. The preferred form of such connecting means includes the above mentioned connector block '5. The block 5 may be made of metal whereby it is strong and rigid. It is hollow as indicated at I3 and grooved as indicated at M, to reduce its weight. The block 1 is positioned between the overlapping portions of the yokes 5 and ii. The block is also preferably provided with longitudinal recesses i5, E5 in its peripheral surface for receiving said overlapping portions of the legs of yokes 5 and t. Such recesses are located at opposite corners of the block 1 in position to receive the yoke members when the latter are lo'- cated in different planes as above described.

I have also provided a novel means for fixing the yokes 5 and 6 to the block I by clamping the overlapping portions in the recesses I5. To this end, I have provided a plate l6 which extends transversely of and bears against one leg of each of the yokes 5 and 6, and a similar plate H, at the other side of the block I, which extends transversely of and bears against the other leg of each of said yokes. The plates I6 and I! are carried by a bolt I8 which extends through the plates and through the hole IS in the block I. The legs of the yokes 5 and 6 may be serrated as shown to better grip the block. If desired, a similar bolt 20 and plates 2| and 22 may be located at right angles to the first mentioned bolt and plates.

When the bolts l8 and 20 are loosened, the yokes 5 and 6 may be adjusted to adjust the length of the lug strap. When said bolts are tightened, the yokes are firmly held against any possibility of slipping. A leather cushion member 23 may be positioned on the yoke 6 to prevent longitudinal movement of the lug strap relative to the pick arm. The yoke 6 is relatively shorter than yoke 5. Also, in my improved construction the connector block I and the overlapping portions of the yokes 5 and 6 may be relatively short, thereby leaving ample room in the yoke 5 for overthrow of the picker stick.

Having fully disclosed the preferred embodiment of my invention, I claim:

1. A loom lug strap comprising a pair of U- shaped metallic yoke members disposed in axial alignment with their respective closed ends forming the opposite ends of the lug strap, one of said members being positioned in a horizontal plane for engagement with a picker stick and the other member being positioned in a vertical plane for engagement with the pick arm and having its legs overlapping the legs of the first said member, a rigid connector block positioned between the overlapping portions of the legs of said members, said block having recesses for receiving said overlapping portions of said members, and means for clamping said portions in said recesses.

2. A loom lug strap comprising a pair of axially aligned metallic yoke members one of which has a closed end for receiving a picker stick and the other of which has a closed end for receiving a pick arm, the first said member being positioned in a horizontal plane and the other member being positioned in a vertical plane with its legs overlapping the legs of the first member, a rigid connector block positioned between the overlapping portions of said member, said block having longitudinal recesses in its peripheral surface for receiving said portions of said members, a bolt passing transversely through said block, and plates carried by said bolt and engaging said overlapping portions for clamping the latter in said recesses.

FREDRIC E. DOUGLAS. 

